One problem related to timing tensioner has been reported for the 2013 Mercedes Benz E350. The most recently reported issues are listed below.
I have shown the car to dealer and they say I have ppay $4000 for repalcement of chain tensioner. The same time for second openion I showed the car to another expert, they say that if the tensioner was bad engine light will apear and car will not run. The car does have 100000 miles power train warranty and my car services at dealership since I bought it. When I start the vehicle it sound like some parts sound hitting body of engine. Also they say that this car come with hydrolic pump pushes oil to top of engine may be the problem. But they want to charge me $4000.